Faint line?

I've just been referred to a fertility clinic and I'm 6 days away from my period. I just got some ovulation tests which came with pregnancy tests and I instinctively took a pregnancy test without thinking, I swear I can see a line. It was my first pee for the last 6 hours  and I've only had one small drink within that time. I've used these tests for years and never had an indent or shadow.

What do you think? Please be honest, I won't be offered and I'm.not holding out much hope. But it does look to have colour in person but it's so light it's hard to tell.

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